Intelligent microcontroller for a smart building / Normasniza Mohd Noor and Nurharyani Ahmad Fami

KEU 380 is a project for the last part student in Electrical Engineering. This is the continuous from KEU 280 for part 5 student, which the same project is doing. The different from both courses are die hardware construction. For KEU 280 we need to cover die basic about our project with the circuit stimulation. However, our circuit cannot be simulating because we use PIC (Programmable Integrated circuit). We should clearly know about the objective of the project. When continue to KEU 380, we start to build hardware. The processes of building the hardware begin with the discussion about the decision to use the suitable software to transfer from schematic to PCB. From die hardware construction, we know about our circuit operation. Our project is about e interfacing between the two servers. The temperature and heat sensor act as die serv er. Microcontroller is a device to interface the serv er. In construction of microcontroller, we use PIC 161'876 which has specific task to control a system, the CAN controller use to make automobiles more reliable, safe and fuel-efficient while decreasing wiring harness weight and complexity. The CAN communication protocol is a CSMA/CD protocol. The CSMA stands for Carrier Sense Multiple Access. What diis means is diat every node on die network must monitor the bus for a period of no activity’ before trying to send a message on the bus (Carrier Sense). In addition, once this period of no activity' occurs, every' node on the bus has an equal opportunity to transmit a message (Multiple Access). The CD stands for Collision Detection. The MCP2515 CAN controller is the heart of the CAN interface. It handles all transmitting and receiving of message packets dial contain useful information for odier nodes on die network via die CAN bus. The MCP2515 CAN controller is also design to interface widi the Serial Peripheral Interface (SP1) port. The SP1 port is available on the PIC16F873A microcontroller and the MCP3201 Analog-to-Digital Converter (ADC).